IHM

The IHM group conducts research into solid-state hydrogen storage and electrochemical energy storage. We study hydrogen storage in various metals and alloys, including those with high entropy, as well as in intermetallic compounds and nanocomposites. Adopting a cross-disciplinary approach, we aim for a thorough understanding of the properties of these materials through theoretical studies based on DFT calculations and Calphad modeling, as well as experimental analyses, notably via coupled in situ or operando analysis methods, including on large instruments. The IHM group is heavily involved in the Priority Research Program and Equipment (PEPR) on decarbonized hydrogen. We have coordinated the PEPR SOLHYD project (“Solid-state hydrogen storage: new strategies, new materials”) for the period 2022-2026, as well as several ANR-funded projects, such as H-BAT, where we are exploring the feasibility of post-NiMH proton batteries. This project is based on replacing the KOH electrolyte with a protic ionic liquid, combined with new electrode materials. In particular, we are developing negative electrode materials based on high-capacity alloys, which are inexpensive and free of critical elements.

The IHM group is also involved in the European REMERDHYS project studying the impact of polymer incorporation in a solid hydrogen storage system. It is also working on the development of all-solid Li-ion batteries with sulphur electrolytes, in connection with the energy transition.